Calculator
BMR calculator
Estimate resting daily energy expenditure for an adult. Data is processed only in your browser, and the page explains the formula and limitations of the result.
Reviewed: 3 August 2026Processed locally
Calculator
Enter data
Sex used by the equation, weight, height and age. Fields marked with an asterisk are required.
How to use the calculator
- Enter the required data: sex used by the equation, weight, height and age.
- Check the values and select “Calculate”.
- Review the primary result and the detailed calculation components.
Calculation details
Formula and calculation method
BMR = 10 × kg + 6.25 × cm − 5 × age + 5 for male or −161 for female.
Worked example
For a woman: 10 × 60 kg + 6.25 × 165 cm − 5 × 30 − 161 gives about 1,320 kcal per day.
Limitations
- The equation was developed from adult data and can differ from measurement, especially with unusual body composition or health conditions.
Sources
Engine version: 1.0 · Last reviewed: 3 August 2026
Frequently asked questions
Is the entered data sent to a server?
No. The calculation runs locally in your browser and the values are not saved by default.
Is the result definitive?
Not always. The equation was developed from adult data and can differ from measurement, especially with unusual body composition or health conditions.